We're you able to get any device to work? I feel your pain. Mine kept shutting off on my first drive hoe from the dealer until I found a nano that worked. Tried the other nano agin and it kept shutting down. The disconnect was so severe the powered center speaker went down and up again. Is that also happening to you?

I didn't have the center speaker issue, but I have 5 nanos in the house. Only one of them works with no disconnecting issues. The other 4 randomly disconnect/connect. Since I found one nano that works, I haven't bothered to bring the car in for service at the dealership.